fips: ensure fs module for /boot is installed
    
    When using dracut with  --hostonly and --no-hostonly-default-device,
    /boot will be inaccessible as dracut will most fs modules unless
    specified. But FIPS require /boot to be accessible, and it will try
    to mount it on boot. It will fail if corresponding fs module is missing.
    
    For most case /boot will be a simple partition, include the fs module
    will be enough for FIPS to mount it. For other cases users have to pass
    extra parameters by themselves.
    
    Suggested-by: Kenneth Dsouza <kdsouza@redhat.com>
    Signed-off-by: Kairui Song <kasong@redhat.com>
    
    patch_name: 0013.patch
    present_in_specfile: true
    location_in_specfile: 13
    squash_commits: true